Valve



2 Sheets-Sheet L M. RIESNER VALVE Filed April 13, 1920 III. I

March 18 1924.

arch 18 1924, 1,487,023

M. RIESNER VALVE Filed April 15, 1920 2 Sheets-Sheet 2 30 line H of Figure 1.

Patented Mar. l, 324.

MICHAEL RIESNER, OF CINCINNATI, OHIO, ASSIG'NOR TO WORTHINGTON PUMP AND MACHINERY CORPORATION, A CORPORATION OF VIRGINIA.

VALVE.

Application filed April 13, 1920. Serial No. 373,610.

T (ZZZ 16710771 it may concern Be it known that I, MICHAEL RIESNER, a citizen of the United States, residing at Cincinnati. county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Valves, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in valves of thetype generally designated as plate valves; such valves being usedin air con'ipressors and similar machinery.

, The invention has for its object to produce a valve construction which is simple in design, durable, and in which the operation of the valves is efficiently controlled.

A further object of the invention is to produce a spring controlled valve of the type referred to in which a differential action of the controlling springs may be had.-

Referring to the drawings, Figure 1 is an elevation of a valve construction embodying the invention.

Figure 2 is a vertical section of the construction shown in Fig. 1.

Figure 3 is a horizontal section on the line 3-3 of Figure 1. Figure 4 is a horizontal section on the Figures 5, 6 and 7 illustrate modified forms of construction embodying the invention.

Referring to the drawings which illustrate concrete embodiments of the invention, 1 indicates anannular plate valve, said valve resting against a seat 2 which may be, as shown, provided with a plurality of ports. Gonstructions embodying the invention will include an abutment which serves as a backing for the spring construction employed to hold the valve to its seat and control its movement. In the particular construction illustrated, a block 3 is employed. this block having an overhanging flange t which formsthe abutment, the block being secured in anysuitable manner, as by a screw 5.

The movement of the valve is controlled by springs, and, in the particular construction shown, and referring more particularly to Figs. 1 to 4 inclusive, there is shown a spring holder which consists of a pair of annular plates 6, 7, this holder being interposed between the valve and the abutment and coacting with the springs to be hereinafter described. In the particular construction now bein described, the springs are integral with t e holder, the plate 6 of the holder having tongues 8 cut therefrom which are bent upward so as to bear against the under surface of the abutment. The tongues referred to are (see Fig. 3) cut on the interior of the annular plate. Simi-. larly, the plate 7 has spring tongues 9 cut therein, but these tongues (see Fig. 4) are cut on the circumference of the plate. It will be noted that the. spring tongues 9 being cut on the circumference of the plate 7 are'longer than the tongues 8 and they are, consequently, more resilient. The plates 6, 7 are assembled back to back and inter posed between the valve and the abutment, the spring tongues of the plate 6 bearing against the abutment, and the spring tongues 9 of the plate 7 bearing against the valve. With this construction, assuming that the lates 6, 7 have the same resilient characteristics, the tongues 8 which are'cut on the interior of the annular plate 6 are Shorter and, therefore, stiffer than the tongues 9 which are out on the circumference of the plate 7. When the valve starts to open, the tongues 9 will afford a certain resistance to the opening movement, but as the valve rises from its seat the shorter, stiffer springs 8 will come into action and increase the resistance to the opening movement. The opening movement of the valve is thus cushioned and the valve promptly and quietly closed and pounding prevented.

In the construction shown in Fig. 5, the spring carrier comprises two plates 10, 1,1, the plate 10 having spring tongues 12 cut therefrom, and the plate 11 having spring tongues 13 cut therefrom. In this modification, the tongues are both out from the circumference of the plates, so that the tongues have the same or substantially the same resilient characteristics. This construction is also effective in permitting a rapid opening movement of the valve at the start and also in securing an efiective cushioning for the valve in opening and prompt and quiet closing.

In the, construction shown in Fig. 6, the plates 14, 15 which form the holder are differently assembled, the plate 15 being arranged so that it bears against the under tongues-on the tion shown in Fig. 7, the holder consists of side of the abutment. In this construction, also,'the tongues are cut from the circumference of the plates, and an interposed plate 16 is employed in connection with the plate 14 to insure a bearing surface for the late 15. In the construca single plate 19 having tongues 20, COll springs 21 being substituted for the upper set of leaf springs. These COll springs 21, as shown, are located in sockets 22 formed in the abutment 4.

All the constructions described are simle and are readily assembled. They all hold the valve effectively against its seat, so as to insure that the ports it controls are properly closed; they permit a rapid initial movement of the valve, so that the valve. may open quickly and fully, and they effectively cushion the valve in opening; and they secure a prompt and quiet closing. Pounding is prevented, and the valves will operate efficiently at high speed and have a long life.

The invention may be embodied in constructions other than those illustrated. The invention is not, therefore, to be restricted to the particular constructions shown.

What is claimed is:

1. The combination with a plate valve, of an abutment, and springs intermediate the abutment and the valve and bearing against the valve at a considerable distance from its center for holding the valve against its seat, some of the springs providing small resistance to the opening movement of the valve and the other springs providing large resistance thereafter.

2. The combination with a plate valve and an abutment, of springs of different strength between the valve plate and the abutment for holding the valve plate against its seat, the weaker springs acting to resist the opening movement of the valve in advance of the other springs.

3. The combination with a plate valve and an abutment, of a spring holder intermediate the valve and the abutment, springs between the abutment and the holder, and springs between the holder and the, valve, one set-of said springs being leaf springs secured to the holder.

4. The combination with a plate valve and an; abutment, of a spring holder intermediate the valve and the abutment, leaf springs secured to the holder, said springs bearing on the valve, and springs between the holder and the abutment.

5. The combination with a plate valve and an abutment, of a spring holder intermediate the valve and the abutment, leaf springs integral with the holder, said springs bearing on the valve, and springs between the holder and the abutment.

6. The combination with a plate valve and an abutment, of a spring holder intermediate the valve and the abutment, leaf springs between the holder and the valve.

and secured to the holder, and leaf springs between the holder and the abutment.

7. The combination, with a plate valve and an abutment, of a spring holder intermediate the valve and the abutment, leaf springs between the holder and the valve, and leaf springs between the holder and the abutment, the leaf springs between the holder and thevalve. being weaker than the springs between the holder and the abutment.

8. The combination with a plate valve and an abutment, of a spring holder intermediate the valve and the abutment, said holder consisting of a pair of plates arranged back to back, leaf springs integral withthe inner plate bearing against the valve, and leaf springs integral with the outer plate bearing against the abutment.

9. The combination with a valve and an abutment, of a spring holder intermediate the valve and the abutment, said holder consisting of a pair of plates arranged back to back, leaf springs integral with the inner plate bearing against the valve, and leaf springs integral with the outer plate bearing against the abutment, the springs between the holder and the valve being weaker than the other springs.

10. The combination with a valve and an abutment, of a springholder intermediate the valve and the abutment, said holder con- 'sisting of a pair of plates arranged back to back, leaf springs integral with the inner plate bearing against the valve, and leaf springs integral with the outer plate bearing against the abutment, the springs beingconcentric and cut from .the plates and the springs between the holder and the valve being formed on a longer radius than the other springs.

In testimony whereof, I have hereunto set my hand.

MICHAEL RlESNlElR. 

